air brake

noun
|Updated on: 20 Aug 2018

Definition of air brake

1 : a brake operated by a piston driven by compressed air
2 : a surface that may be projected into the airstream for increasing drag and lowering the speed of an airplane

Recent Examples of air brake from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'air brake.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of air brake

1846

in the meaning defined at sense 1

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